Free Parts Essay Contest

Now why is there no one else interested in parts?

Ed, your generosity is commendable. I bet plenty of folks here would appreciate them, but aren't comfortable coming out and asking.

I fall into the group who'd rather have some teeth drilled than write an essay, anesthetic optional. But my "room full of stuff no one else understands" is now only half full, and I need help refilling it!
 
Ed, your generosity is commendable. I bet plenty of folks here would appreciate them, but aren't comfortable coming out and asking.

I fall into the group who'd rather have some teeth drilled than write an essay, anesthetic optional. But my "room full of stuff no one else understands" is now only half full, and I need help refilling it!

What kind of parts are you looking for.

Do list them in verse!
 
tone motor power supply for Hammond organs so they can be run from a generator. Requires an output of 110 volts, 10 watts at a very precise 60 hertz.

Did you ever try varying the frequency of the motor supply to create a pitch bend effect? I have often wondered if the motor would handle a wide enough frequency range for a two or three semitone bend. The logistics of moving a 250 pound beast down narrow stairs into the basement lab has prevented me from experimenting on the M3 that I impulse purchased from a Pennsylvania Goodwill store for $39.95. Taking it apart in what has become my wife's workout room is also a no-no.

Ed, I am not a part of the FR crowd.

Cal, those aren't speakers....they're sonic weapons that make Marty McFly's guitar amp look like a transistor radio.
 
Here is a noob in the UK,
Admiring the genorositay.
Wishing i lived in the states,
I'd show off to my mates.
Then hide in the garage and play.

PM me an address

Tubey,
Got it up and running today. As I use a 2.5476 MHz master clock the idea is to have a very stable reference frequency. But as I have spare boards....

Most parts are still around except A/D and back.
 
too many bits,
giving you fits ?
how bout a box of turntable/phono stuff ?
you know old cartridges test records and other fluff,
or a box of measurement gear ?
wires/connectors/clips/probes or measurement devices would be useful here,
got a box of spare vacuum tube stuff ?
tubes/sockets and higher voltage resistors/capacitors etc not to ruff,
got an old spare fixable soldering station ?
putting it in a box would help your consolidation
etc,etc,etc.

know your having fun with this
dennis h
 
Somebody likened writing an essay with getting a tooth pulled out. I am
not sure it is that bad, but it depends on your standards I guess.

I got into this hobby because I love listening to music and I hate bad
sound. I tried to buy some amps and speakers but nothing really did it
at home.

But what then to do? Reading glossy hifi mags with streams of
incoherent words and sentences? It made me puke after a while.

Searching for a safe haven I found diyaudio. But with no real physics
or electronics background it was tough. I started reading
Art of Electronics, Feynman, ARRL handbook and what not else. And then
re-reading the lot - on repeat. Still do. So much to understand. Oh well.
I just wish I was smarter. But learning every day is fun! I can do this for
years to come. Even if it is sooo slow.

The mystery of good sound is still out there. Somehow it is heartening that
nobody even here seems to know definitely, or even how to measure if a
system will sound good or not.

My first project was to restore an F5 turbo amp with burned power fets
and broken cascoded bjts. The amp build was noisy. It was fun to learn
matching fets, changing wiring layout while looking on the scope, making
pcb for a new cap multiplier, etc.

Current project is building a new microphone amplifier for a nice
couple of vintage Gefell MV102 condenser measurement microphones I
found on Kleinanzeigen. Still left is chassis work, determining
the best load impedance for the kp303v ijfet in the mic, decide on
line output transformer or a jfet buffer. After that I need to see if I
can calibrate mic using high voltage spark method. 20KV is scary and fun.
Then to measure my new speakers and then learning about speaker simulations....
And don't get me started on DACs. Oh, so long way to go...

So many projects... But I am determined to complete one project at time.